<template>
  <div>
    <div class="users">
      <!-- 面包屑导航 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
      </el-breadcrumb>


      <!-- 卡片视图区域 -->
      <el-card>
        <!-- 搜索与添加区域 -->
        <el-row :gutter="20">
          <el-col :span="7">
            <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable>
              <el-button
                @click="getUserList"
                slot="append"
                icon="el-icon-search"
              ></el-button>
            </el-input>
          </el-col>
          <el-col :span="4">
            <el-button type="primary" @click="addDialogVisible = true"
              >添加用户</el-button
            >
          </el-col>
        </el-row>
        <!-- 用户列表(表格)区域 -->
        <el-table :data="userList" border stripe style="margin-top: 20px">
          <el-table-column type="index"></el-table-column>
          <el-table-column label="姓名" prop="username"></el-table-column>
          <el-table-column label="邮箱" prop="email"></el-table-column>
          <el-table-column label="电话" prop="mobile"></el-table-column>
          <el-table-column label="角色" prop="role_name"></el-table-column>
          <el-table-column label="状态">
            <template slot-scope="scope">
              <el-switch
                v-model="scope.row.mg_state"
                @change="userStateChanged(scope.row)"
              ></el-switch>
            </template>
          </el-table-column>
          <el-table-column label="操作" width="180px">
            <template slot-scope="scope">
              <!-- 修改 -->
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
              <!-- 删除 -->
              <el-button
                type="danger"
                icon="el-icon-delete"
                size="mini"
                @click="removeUserById(scope.row.id)"
              ></el-button>
              <!-- 分配角色 -->
              <el-tooltip
                class="item"
                effect="dark"
                content="分配角色"
                placement="top"
                :enterable="false"
              >
                <el-button
                  type="warning"
                  icon="el-icon-setting"
                  size="mini"
                  @click="setRole(scope.row)"
                ></el-button>
              </el-tooltip>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>

      <!-- 添加用户对话框主体区域 -->
      <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed"
      >
        <!-- 内容主体区 -->
        <el-form
          :model="addForm"
          :rules="addFormRules"
          ref="addFormRef"
          label-width="70px"
        >
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机号" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </div>
      </el-dialog>

      <!-- 修改用户的对话框 -->
      <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
      >
        <el-form
          :model="editForm"
          :rules="editFormRules"
          ref="editFormRef"
          label-width="70px"
        >
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 分配角色的对话框 -->
      <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed"
      >
        <div>
          <p>当前用户：{{ userInfo.username }}</p>
          <p>当前角色：{{ userInfo.role_name }}</p>
          <p>
            分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option
                v-for="item in roleslist"
                :key="item.id"
                :label="item.roleName"
                :value="item.id"
              >
              </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo"
            >确 定</el-button
          >
        </span>
      </el-dialog>
    </div>
  </div>
</template>

<script>
export default {
  name: "",
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;

      if (regEmail.test(value)) {
        //合法的邮箱
        return cb();
      }
      cb(new Error("请输入合法的邮箱"));
    };

    //验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      //验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;

      if (regMobile.test(value)) {
        return cb();
      }

      cb(new Error("请输入合法的手机号"));
    };
    return {
      //获取查询用户信息的参数
      queryInfo: {
        query: "", //查询条件
        pagenum: 1, //当前页数
        pagesize: 2, //每页显示几条
      },

      //保存请求回来的用户列表数据
      userList: [],
      total: 0,
      addDialogVisible: false, //控制用户添加对话框的显示隐藏

      //添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },

      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "用户名长度在 6 到 15 个字符",
            trigger: "blur",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },

      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: {},
      //修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },

      //控制分配角色对话框的显示隐藏
      setRoleDialogVisible: false,

      //需要被分配角色的用户信息
      userInfo: {},

      //所有角色的数据列表
      roleslist: [],
      //已选中的角色id值
      selectedRoleId:''
    };
  },
  created() {
    this.getUserList();
  },
  mounted() {},
  methods: {
    async getUserList() {
      //发送请求获取用户列表数据
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      //如果返回状态为异常状态则报错并返回
      if (res.meta.status !== 200)
        return this.$message.error("获取用户列表失败");
      //如果返回状态正常，将请求的数据保存在data中
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    //pagesize改变时触发，当pagesize发生改变的时候
    handleSizeChange(newSize) {
      //   console.log(newSize)
      this.queryInfo.pagesize = newSize;

      this.getUserList();
    },
    //页码发生改变时触发当current发生改变的时候
    handleCurrentChange(current) {
        console.log(current)
      this.queryInfo.pagenum = current;

      this.getUserList();
    },
    //监听 switch 开关状态的改变
    async userStateChanged(row) {
      //发送请求进行状态修改
      //get URl方式传参 获取数据(数据量大)
      //post  发送数据(数据量大)
      //put 修改
      //delete 删除
      const { data: res } = await this.$http.put(
        `users/${row.id}/state/${row.mg_state}`
      );
      //如果返回状态为异常状态则报错并返回
      if (res.meta.status !== 200) {
        row.mg_state = !row.mg_state;
        return this.$message.error("修改状态失败");
      }
      this.$message.success("更新状态成功");
    },

    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },

    //点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;
        //可以发起添加用户的网络请求
        const { data: res } = await this.$http.post("users", this.addForm);

        if (res.meta.status !== 201) {
          this.$message.error("添加用户失败");
        }

        this.$message.success("添加用户成功");
        //隐藏添加用户的对话框
        this.addDialogVisible = false;

        //重新获取用户列表数据
        this.getUserList();
      });
    },

    //展示编辑用户的对话框
    async showEditDialog(id) {
      //console.log(id);
      const { data: res } = await this.$http.get("users/" + id);

      if (res.meta.status !== 200) {
        return this.$message.error("查询用户信息失败");
      }

      this.editForm = res.data;
      this.editDialogVisible = true;
    },

    //监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        // console.log(valid);
        if (!valid) return;
        //发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          { email: this.editForm.email, mobile: this.editForm.mobile }
        );

        if (res.meta.status !== 200) {
          return this.$message.error("更新用户信息失败");
        }

        //关闭对话框
        this.editDialogVisible = false;

        //刷新数据列表
        this.getUserList();

        //提示修改成功
        this.$message.success("更新用户信息成功");
      });
    },

    //根据id删除对应的用户信息
    async removeUserById(id) {
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);

      //如果用户确认删除，则返回值为字符串 confirm
      //如果用户取消了删除，则返回值为字符串  cancel

      if (confirmResult != "confirm") {
        return this.$message.info("已取消删除");
      }

      const { data: res } = await this.$http.delete("users/" + id);

      if (res.meta.status !== 200) {
        return this.$message.error("删除用户失败");
      }

      this.$message.success("删除用户成功");
      this.getUserList();
    },

    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo;
      const { data: res } = await this.$http.get("roles");

      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }

      this.roleslist = res.data;

      this.setRoleDialogVisible = true;
    },

    //点击按钮，分配角色
    async saveRoleInfo(){
      if(!this.selectedRoleId){
        return this.$message.error('请选择要分配的角色')
      }
      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{
        rid: this.selectedRoleId
      })

      if(res.meta.status !== 200){
        return this.$message.error('更新角色失败')
      }

      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },

    //监听分配角色对话框的关闭事件
    setRoleDialogClosed(){
      this.selectedRoleId = ""
      this.userInfo = {}
    }
  },
  computed: {},
  watch: {},
};
</script>

<style scoped>
</style>